var lastMenuId = 0;
var timer;
var mSheets = new Array();
var currZ = 100;
var mReady = false;
var mLeftPos = 326;

function MenuLink(textVal, linkVal, subVal){
	this.text = textVal;
	this.action = linkVal;
	this.submenu = subVal;
}

function menuHideAll(){
	for (var c in mSheets) mSheets[c].hide();
}

function menuHideTimerSet(){
	timer = window.setTimeout(menuHideAll, 300);
}

function menuHideTimerReset(){
	if (timer) window.clearTimeout(timer);
}

function menuAddLink(textVal, linkVal){
	this.links[this.links.length] = new MenuLink(textVal, linkVal, null);
}

function menuAddSubmenu(textVal, linkVal){
	this.links[this.links.length] = new MenuLink(textVal, linkVal, new MenuSheet(this));
}

function menuShow(leftVal, topVal){
	this.block.style.left = leftVal + "px";
	this.block.style.top = topVal + "px";
	this.block.style.display = "block";
}

function menuHide(){
	this.hideCh();
	this.block.style.display = "none";
}

function menuFlip(leftVal, topVal){
	var disp = this.block.style.display;
	if (disp == "none") this.show(leftVal, topVal);
	else this.hide();
}

function menuHideCh(){
	for (var c in this.links){
		curLink = this.links[c];
		if (curLink.submenu) curLink.submenu.hide();
	}
}

function menuCreate(path){
	var res = "<div class=\"menu-sh\" onmouseout=\"menuHideTimerSet()\" onmouseover=\"menuHideTimerReset()\"><table cellpadding=\"0\" cellspacing=\"0\" class=\"tab-menu-sh\">";
	var curLink;
	var newPath;
	if (path == null) path = "mSheets[" + this.id + "]";
	for (var c in this.links){
		curLink = this.links[c];
		res += "<tr><td valign=\"center\" class=\"blk-menu-sh";
		if (curLink.submenu) res += " blk-menu-arr";
		res += "\" onmouseover=\"setClass(this, 'blk-menu-sh-act";
		if (curLink.submenu) res += " blk-menu-arr-act";
		res += "'); ";
		res += path + ".hideCh()";
		if (curLink.submenu){
			newPath = path + ".links[" + c + "].submenu";
			res += "; " + newPath + ".show(getLeftPos(this) + (this.offsetWidth+1) , getTopPos(this))";
			curLink.submenu.create(newPath);
		}
		res += "\" onmouseout=\"setClass(this, 'blk-menu-sh";
		if (curLink.submenu) res += " blk-menu-arr";
		res += "')\" onclick=\"gotoURL('"+curLink.action+"')\" nowrap=\"nowrap\"><div>" + curLink.text + "</div></td></tr>";
	}
	res += "</table></div>";
	this.block.innerHTML = res;
}

function MenuSheet(parentObj){
	this.links = new Array();
	this.addLink = menuAddLink;
	this.addSubmenu = menuAddSubmenu;
	this.create = menuCreate;
	this.show = menuShow;
	this.hide = menuHide;
	this.flip = menuFlip;
	this.hideCh = menuHideCh;
	this.id = lastMenuId;
	lastMenuId++;
	this.parent = parentObj; 
	this.block = document.createElement("DIV");
	this.block.className = "blk-menu";
	this.block.style.position = "absolute";
	this.block.style.display = "none";
	this.block.style.zIndex = currZ;
	currZ++;
	this.block.id = "ms" + this.id;
	document.body.appendChild(this.block);
}

function mouseX(event)
{
  return event.pageX || (event.clientX +
    (document.documentElement.scrollLeft || document.body.scrollLeft));
}

function mouseY(event)
{
  return event.pageY || (event.clientY +
    (document.documentElement.scrollTop || document.body.scrollTop));
}

function elementX(obj)
{
  var curleft = 0;
  if (obj.offsetParent) {
    while (obj.offsetParent) {
      curleft += obj.offsetLeft;
      obj = obj.offsetParent;
    }
  }
  else if (obj.x)
    curleft += obj.x;
  return curleft;
}

function elementY(obj)
{
  var curtop = 0;
  if (obj.offsetParent) {
    while (obj.offsetParent) {
      curtop += obj.offsetTop;
      obj = obj.offsetParent;
    }
  }
  else if (obj.x)
    curtop += obj.y;
  return curtop;
}

function showMenu(objVal, numVal){
	//alert(objVal+","+ numVal)
	if (mReady){
		menuHideAll();
		objVal.className = "menu_item_selected";
		
		posX=elementX(objVal);		
		posY=elementY(objVal);
		
		if ( numVal >= 0 ) {
		{			
			mSheets[numVal].show(posX+2, posY+28);
			menuHideTimerReset();			
		}
		}
	}
}

function hideMenu(objVal, numVal){
	if (mReady){
		menuHideTimerSet();
		/*
		if ( document.getElementById(obj_left) )
			document.getElementById(obj_left).className='menu_sep';
		
		if ( document.getElementById(obj_right) )
			document.getElementById(obj_right).className='menu_sep';
		*/
		objVal.className = "menu_item";
	}
}